Progress:
* VIRT-65 [QEMU upstream maintainership]
- Softfreeze this week, so a lot of pull request handling, and
one last small arm pullreq to put together and send out
- Our Coverity Scan setup was broken (the person who usually does
the builds updated his machine to a newer Fedora which broke the tool).
I pulled up an old patchset I had from a year ago which scripts things
so you can do a build-and-upload automatically via Docker so that
we're not dependent on one person for this. This took longer than I
expected as there were a bunch of things that needed fixing both in
the scripting and in bits of the codebase that the tools warned about.
Patch series sent.
- When we did get a Coverity run through, it reported 112 new issues;
spent some time going through and triaging them (lots of false positives
but also lots of real bugs) and submitting patches for some of them.
* VIRT-364 [QEMU support for ARMv8.1-M extensions]
- sketched out the work required and created some 'story' level
cards to go under the epic. Still open questions:
+ should we model Cortex-M55 or a more generic 'max' CPU?
+ what board model do we want to use?
+ does LITE have any guest code using v8.1M features for testing?
Random notes:
* my new desk chair and standing desk arrived this week
(the latter still needs assembling...) so I am gradually
improving the rough edges of my WFH setup.
thanks
-- PMM
== Progress ==
* Out of office 1 day
* More Morello
- Patch set for the 'disassemble' command in review
- Working on the final part of the capability formatting
== Plan ==
* More Morello
Progress:
[VIRT-349 # QEMU SVE2 Support ]
10 of N insn groups implemented.
Annoyingly, there doesn't seem to be a summary of new insns, so confirming that
all of the insns have been implemented.
[VIRT-327 # Richard's upstream QEMU work ]
Patch review. Mostly Phil's arm --disable-tcg set.
Cleanup for some of the new Coverity reports.
Flush tcg patch queue.
[GCC]
Two revisions improving TImode comparisons for aarch64 (PR94174).
https://gcc.gnu.org/pipermail/gcc-patches/2020-March/542447.html
[Kernel]
Follow-up on a discussion a few weeks ago re __range_ok. The gcc cmpti patch
set is in support of that, but I also found a much better solution for constant
sized checks.
http://lists.infradead.org/pipermail/linux-arm-kernel/2020-March/719754.html
r~
VirtIO Related Work ([VIRT-366])
================================
- Whole bunch of scoping work on tasks for this cycle
- Briefed the TSC Strategic Meeting on work plan
- Feedback on Friday call seemed positive, hopefully will get the
votes
[VIRT-366] <https://projects.linaro.org/browse/VIRT-366>
QEMU Tooling ([VIRT-252])
=========================
Extend gdbstub for SVE ([VIRT-281])
- posted [PATCH v1 00/28 for 5.0] testing and gdbstub Message-Id:
<20200316172155.971-1-alex.bennee(a)linaro.org>
- now merged and parent cards closed out including
<https://projects.linaro.org/browse/VIRT-26>
Upstream Work ([VIRT-109])
==========================
- posted [PATCH v1 0/5] testing updates (docker and acceptance CI
tweaks) Message-Id: <20200309202318.3481-1-alex.bennee(a)linaro.org>
- spent a fair time fighting with check-acceptance tests weirdness
- fielded questions from potential students for GSoC cache modelling
project
- more time tracking down "check-acceptance" issues
- posted [RFC PATCH for 5.0] configure: disable MTTCG for MIPS
guests Message-Id: <20200320114522.16273-1-alex.bennee(a)linaro.org>
Completed Reviews [2/2]
=======================
[PATCH v10 0/3] Acceptance test: Add "boot_linux" acceptance test
Message-Id: <20200317141654.29355-3-crosa(a)redhat.com>
[PATCH 0/5] QEMU Gating CI
Message-Id: <20200312193616.438922-5-crosa(a)redhat.com>
Absences
========
- Splitting time between work and home-schooling
Current Review Queue
====================
* [PATCH 0/2] thread: add lock guard macros
Message-Id: <20200311123624.277221-1-stefanha(a)redhat.com>
Added: <2020-03-11 Wed>
* [PATCH v8 0/9] qemu-binfmt-conf.sh
Message-Id: <20200307170251.GA7@dd5f6ec33fb0>
Added: <2020-03-08 Sun>
* [RFC][PATCH 0/3] IVSHMEM version 2 device for QEMU
Message-Id: <cover.1573477032.git.jan.kiszka(a)siemens.com>
Added: <2020-02-14 Fri>
* [RFC 0/9] Add an interVM memory sharing device
Message-Id: <1580815851-28887-1-git-send-email-i.kotrasinsk(a)partner.samsung.com>
Added: <2020-02-05 Wed>
--
Alex Bennée
== Progress ==
* BFD Linker:
- GNU-629: non-contiguous memory support: minor follow-ups
* GCC upstream validation:
- reported a couple of failures/regressions
- PR90378 working on reproducing a non-functional code problem with spec2006
on arm with LTO and -Os. Looks like a stack corruption issue
* GCC:
- comparing testsuite results for cortex-m3 and cortex-m33 with
cortex-a9 to check what cortex-M problem there are.
* misc:
- infra fixes / troubleshooting / reviews
== Next ==
* spec2006 / LTO / Os / aarch32
* FDPIC GDB
* GCC/cortex-M
Progress:
* VIRT-65 [QEMU upstream maintainership]
- Softfreeze this week, so a lot of pull request handling, and
one last small arm pullreq to put together and send out
- Our Coverity Scan setup was broken (the person who usually does
the builds updated his machine to a newer Fedora which broke the tool).
I pulled up an old patchset I had from a year ago which scripts things
so you can do a build-and-upload automatically via Docker so that
we're not dependent on one person for this. This took longer than I
expected as there were a bunch of things that needed fixing both in
the scripting and in bits of the codebase that the tools warned about.
Patch series sent.
- When we did get a Coverity run through, it reported 112 new issues;
spent some time going through and triaging them (lots of false positives
but also lots of real bugs)
thanks
-- PMM
== Progress ==
* Out of office 1 day
* More Morello ('disassemble' command)
== Plan ==
* More Morello
* Will probably be out of office more with toddler
Howdy,
1st post on this list.
I just tried the windows binaries found on the latest-7 release site,
namely of:
gcc-linaro-7.5.0-2019.12-i686-mingw32_arm-linux-gnueabihf
When I go into the bin folder and enter:
.\arm-linux-gnueabihf-gdb.exe --version
It outputs nothing, just returns. The version I used prior, 7.3.1, still
works as supposed.
Notable is that from 7.3.1 to 7.5.0, the gdb.exe size grew from ~96MB to
~128MB.
I re-downloaded the whole tar again and replaced the bin folder, no change.
I can actually *build* a C++ project with those binaries, though, and
the output executable works.
Only GDB seems to be affected so far.
[VIRT-344 # ARMv8.5-MemTag, Memory Tagging Extension ]
Reorg sve load/stores w/probe_access_flags.
Posted v6, now including support for sve.
[VIRT-327 # Richard's upstream QEMU work ]
Posted v3 of tbi cleanups.
Updated a forgotten patch vs sve fmla/fcmla.
Oodles of patch review.
r~
VirtIO Related Work ([VIRT-366])
================================
- posted [PATCH] tools/virtiofsd: add support for --socket-group
Message-Id: <20200312104142.21259-1-alex.bennee(a)linaro.org>
- continued discussion on approaches on virtio-dev list Message-Id:
<874kv15o4q.fsf(a)linaro.org>
- email threads with Qualcomm Message-Id:
<CAHFG_=WY8duYm7xNTNo=iGZKqD12gt9ps05pyc1qmbUDcLM0Bw(a)mail.gmail.com>
to drill down on their requirements
- two long HOs with Qualcomm and Google to further discuss work
- I feel like there a few tasks forming which I will try an clean-up
the breakdown on the initiate for next week.
[VIRT-366] <https://projects.linaro.org/browse/VIRT-366>
Upstream Work ([VIRT-109])
==========================
- posted [PATCH v1 0/5] testing updates (docker and acceptance CI
tweaks) Message-Id: <20200309202318.3481-1-alex.bennee(a)linaro.org>
- spent a fair time fighting with check-acceptance tests weirdness
- had an initial look at [PATCH 0/5] QEMU Gating CI Message-Id:
<20200312193616.438922-1-crosa(a)redhat.com>
[VIRT-109] <https://projects.linaro.org/browse/VIRT-109>
Completed Reviews [6/6]
=======================
[PATCH v7 00/18] Add Allwinner H3 SoC and Orange Pi PC Machine
Message-Id: <20200310213203.18730-1-nieklinnenbank(a)gmail.com>
[PATCH v16 00/10] VIRTIO-IOMMU device
Message-Id: <20200214132745.23392-11-eric.auger(a)redhat.com>
- CLOSING NOTE [2020-03-11 Wed 17:18]
Already merged upstream
Added: <2020-03-03 Tue>
{PATCH v2 0/2} tests/tcg/multiarch: Add tests for implemented real
Message-Id: <1581603905-21565-1-git-send-email-Filip.Bozuta(a)rt-rk.com>
- CLOSING NOTE [2020-03-12 Thu 09:58]
Not plumbed into the testing infrastructure so a bit of a code dump.
Added: <2020-02-13 Thu>
[PATCH v3 02/10] tests/vm: Add configuration to basevm.py
Message-Id: <20200310182536.11137-3-robert.foley(a)linaro.org>
[PATCH 0/4] tests/vm: minor install tweaks, update netbsd & freebsd
Message-Id: <20200310083218.26355-1-kraxel(a)redhat.com>
[PATCH 0/5] docs/system: Split target-arm.rst
Message-Id: <20200309215818.2021-3-peter.maydell(a)linaro.org>
Absences
========
- None
Current Review Queue
====================
* [PATCH 0/2] thread: add lock guard macros
Message-Id: <20200311123624.277221-1-stefanha(a)redhat.com>
Added: <2020-03-11 Wed>
* [PATCH v8 0/9] qemu-binfmt-conf.sh
Message-Id: <20200307170251.GA7@dd5f6ec33fb0>
Added: <2020-03-08 Sun>
* [RFC][PATCH 0/3] IVSHMEM version 2 device for QEMU
Message-Id: <cover.1573477032.git.jan.kiszka(a)siemens.com>
Added: <2020-02-14 Fri>
* [RFC 0/9] Add an interVM memory sharing device
Message-Id: <1580815851-28887-1-git-send-email-i.kotrasinsk(a)partner.samsung.com>
Added: <2020-02-05 Wed>
--
Alex Bennée
Progress:
* VIRT-65 [QEMU upstream maintainership]
- More documentation cleanup (splitting the Arm boards section
up into one page per board)
- Various patch review
- Put together last large pull request before softfreeze hits next week
- Fixed the Windows installer generation, which I broke in the
process of moving the HTML docs around
- Fixed read buffer overrun in i82596 device model spotted by coverity
- Fixed a user-experience papercut that's been bothering me for years:
for arm you needed to specify '-M virt' to avoid an error even if all
you wanted was the '-cpu help' or '-device help' output.
* VIRT-241 [QEMU ISA Support for A-profile]
- Jira gardening: split out the optional parts of each architectural
tick sub-epic, and added the new 8.6 tasks
thanks
-- PMM
== Progress ==
* BFD Linker:
- GNU-629: non-contiguous memory support: patch accepted and committed
* GCC upstream validation:
- reported a couple of failures/regressions
- PR90378 working on reproducing a non-functional code problem with spec2006
on arm with LTO and -Os
* misc:
- infra fixes / troubleshooting / reviews
== Next ==
* spec2006 / LTO / Os / aarch32
* FDPIC GDB
Hi Sir,
I have some questions for tool chain:
1. Can the latest version “linaro-gcc/7.5” support ARMv9 new ISA?
2. If not, when will the new release version can support?
Thanks a lot.
Chun-Chia
VirtIO Related Work ([VIRT-366])
================================
- Followed up with ARM on the roll of Hafnium and secure partitioning
with VirtIO
- Continued working through various requirements for the work
- raised [VIRT-373] to describe some potentially common work on
handling userspace backends
- started discussion on approaches on virtio-dev list Message-Id:
<874kv15o4q.fsf(a)linaro.org>
- posted [RFC PATCH] tools/virtiofsd: add support for --socket-group
Message-Id: <20200304185025.19853-1-alex.bennee(a)linaro.org>
[VIRT-366] <https://projects.linaro.org/browse/VIRT-366>
[VIRT-373] <https://projects.linaro.org/browse/VIRT-373>
Upstream Work ([VIRT-109])
==========================
- posted [PATCH v1 00/10] testing/next updates (tweaks and
re-greening) Message-Id:
<20200302181907.32110-1-alex.bennee(a)linaro.org>
- posted [PULL 0/9] testing updates (tests/vm and acceptance tweaks)
Message-Id: <20200304100154.14822-1-alex.bennee(a)linaro.org>
[VIRT-109] <https://projects.linaro.org/browse/VIRT-109>
Completed Reviews [3/3]
=======================
[PATCH v3 00/33] Convert qemu-doc to rST
Message-Id: <20200228153619.9906-1-peter.maydell(a)linaro.org>
[PATCH v5 00/50] Initial support for multi-process qemu
Message-Id: <cover.1582576372.git.jag.raman(a)oracle.com>
- CLOSING NOTE [2020-03-02 Mon 18:20]
Initial pass, mostly checking wasn't CI broken, which it was.
Added: <2020-02-28 Fri>
[PATCH v6 00/18] Add Allwinner H3 SoC and Orange Pi PC Machine
Message-Id: <20200301215029.15196-1-nieklinnenbank(a)gmail.com>
Absences
========
- None
Current Review Queue
====================
* [PATCH v16 00/10] VIRTIO-IOMMU device
Message-Id: <20200214132745.23392-11-eric.auger(a)redhat.com>
Added: <2020-03-03 Tue>
* [RFC][PATCH 0/3] IVSHMEM version 2 device for QEMU
Message-Id: <cover.1573477032.git.jan.kiszka(a)siemens.com>
Added: <2020-02-14 Fri>
* {PATCH v2 0/2} tests/tcg/multiarch: Add tests for implemented real
Message-Id: <1581603905-21565-1-git-send-email-Filip.Bozuta(a)rt-rk.com>
Added: <2020-02-13 Thu>
* [RFC 0/9] Add an interVM memory sharing device
Message-Id: <1580815851-28887-1-git-send-email-i.kotrasinsk(a)partner.samsung.com>
Added: <2020-02-05 Wed>
--
Alex Bennée
Progress:
* VIRT-65 [QEMU upstream maintainership]
- found and fixed some bugs in our "hflags caching" for M-profile
which caused spurious assertions in some corner cases
- got the rST conversion patchset through review and into master
- sent some followup cleanup patches that remove some texinfo
related bits of code we no longer need
- patch review:
+ rth's final respin of the "honour more HCR_EL2 traps" series
+ patchset fixing some memory leaks of timer objects
+ patchset for cubieboard model to error out rather than ignoring
some bogus user command line options
* VIRT-241 [QEMU ISA Support for A-profile]
+ Wrote an implementation of v8.2-TTS2UXN; investigating how best
to test it
thanks
-- PMM
[VIRT-344 # ARMv8.5-MemTag, Memory Tagging Extension ]
Lots of work, including an arch update. The system-mode patch set is much
changed, but still not quite ready.
[VIRT-349 # QEMU SVE2 Supprt ]
[VIRT-327 # Richard's upstream QEMU work ]
TBI fixes, 2 rounds.
HCR fixes, 2 rounds.
TCG patch queue flushed.
Some patch review.
r~
Good afternoon,
I would like to announce the breakthrough in extending gdb with non
intrusive instructions and functions tracing on ARM processors using
Coresight ETM traces, as described in previous mails.
the source code is made public in the git repository
https://github.com/gzied/binutils-gdb/ in the branch gdb_arm_coresight.
this implementation was compiled and tested on an STM32MP1 (ARMv7
Architecture) board running "Linux arm 5.3.10-armv7-lpae-x15" distribution
where the device tree was modified to declare CoreSight components.
to build the software
>checkout the software from the branch gdb_arm_coresight
> cd ..
>mkdir build
>cd build
> ../binutils-gdb/configure --with-arm-cs
>make
after a successful build gdb will be available in the folder build/gdb
to run the software
build the software you would like to debug with debugging info (-g flag)
>gcc -g software.c -o software
start debugging your software
>gdb software
set a breakpoint at main
(gdb) b main
(gdb) run
set a breakpoint in a location after the code you would like to trace
(gdb) b my_function
set your etm sink, sinks can be found by listing the folder
/sys/bus/event_source/devices/cs_etm/sinks/. use a sink that is capable of
storing the traces on chip (etf, etb ...)
(gdb) set record btrace etm sink tmc_etf0
start recording etm traces
(gdb) record btrace etm
continue the execution of the program
(gdb) c
wait until the breakpoint is hit,
analyse and display the traces
- on assembly level
(gdb) record instruction-history
- on c level
(gdb) record function-call-history /ilc
you can increase the number of instructions displayed by using
(gdb) set record instruction-history-size size
(gdb) set record function-call-history-size size
the work is still in an early stage and needs to be improved, extended and
stabilized. your feedback and contributions are welcome
Kind Regards
Zied Guermazi
VirtIO Related Work ([VIRT-366])
================================
- had a couple of HOs and internal threads to flesh out understanding
for VirtIO work
- queried VIRTIO adoption in other hypervisors Message-Id:
<87mu93vwy2.fsf(a)linaro.org> to help understanding
- need a meeting with QC/NXP to discuss their requirements and why
they need certain devices in VirtIO
- a lot of the Android focus seems to be on isolating various secure
workloads
- avoiding needing secure but un-trusted code at elevated privileges
with access to main OS
- suspect the breakdown in the card needs re-arranging
[VIRT-366] <https://projects.linaro.org/browse/VIRT-366>
Upstream Work ([VIRT-109])
==========================
- posted [PATCH v2 00/12] testing/next (with build fixes!) Message-Id:
<20200130113223.31046-10-alex.bennee(a)linaro.org>
- posted [PULL 00/19] testing and plugin updates Message-Id:
<20200226073929.28237-1-alex.bennee(a)linaro.org>
- did some debugging/diagnosis for recent slowdown of ARM emulation in
master Message-Id:
<CAPan3Wq-MVwcJQELP8n+g33CR7tsiGXQ698gA177nd2my9hWCw(a)mail.gmail.com>
- posted [PATCH v1 0/4] Fix codegen translation cache size
Message-Id: <20200226181020.19592-1-alex.bennee(a)linaro.org>
[VIRT-109] <https://projects.linaro.org/browse/VIRT-109>
Completed Reviews [3/3]
=======================
[PATCH v16 00/10] VIRTIO-IOMMU device
Message-Id: <20200214132745.23392-1-eric.auger(a)redhat.com>
- CLOSING NOTE [2020-02-26 Wed 15:37]
It's in an in-flight PR now, will play with it once it lands.
Added: <2020-02-14 Fri>
[PATCH RISU] aarch64.risu: Add patterns for v8.3-RCPC and v8.4-RCPC insns
Message-Id: <20200225143923.22297-1-peter.maydell(a)linaro.org>
[PATCH v3 0/3] Fix number of priority bits for arm boards
Message-Id: <1582537164-764-1-git-send-email-sai.pavan.boddu(a)xilinx.com>
- CLOSING NOTE [2020-02-28 Fri 17:22]
Have been pulled into target-arm next but didn't fix the
kvm-unit-test failures with priority masking as I had hopped they
would.
Added: <2020-02-25 Tue>
Absences
========
- None
Current Review Queue
====================
* [RFC][PATCH 0/3] IVSHMEM version 2 device for QEMU
Message-Id: <cover.1573477032.git.jan.kiszka(a)siemens.com>
Added: <2020-02-14 Fri>
* {PATCH v2 0/2} tests/tcg/multiarch: Add tests for implemented real
Message-Id: <1581603905-21565-1-git-send-email-Filip.Bozuta(a)rt-rk.com>
Added: <2020-02-13 Thu>
* [RFC 0/9] Add an interVM memory sharing device
Message-Id: <1580815851-28887-1-git-send-email-i.kotrasinsk(a)partner.samsung.com>
Added: <2020-02-05 Wed>
* [PATCH v2 0/7] configure: Improve PIE and other linkage
Message-Id: <20191218223441.23852-1-richard.henderson(a)linaro.org>
Added: <2020-01-06 Mon>
--
Alex Bennée
Progress:
* VIRT-65 [QEMU upstream maintainership]
- Got confused by QEMU aborting in the PMU code on a GICv3-only host,
which turns out to be because our error handling for "no GICv2
support" was broken. Sent a patch.
- Another push towards getting texi-to-rST conversion done:
+ Converted a few more simple texi doc files to rST
+ Took up a patchset Paolo did for more automated conversion, and
sorted out the parts it didn't deal with, to get it to a point
where it could delete almost all of the texinfo sources. Sent
a big patchset to the list for review.
- patch review:
+ Gumstix cleanup patchset
+ rth's series to honour more HCR_EL2 traps
+ add a few missing devices to integratorcp
+ get the number of implemented priority bits in GICv2 right
* VIRT-241 [QEMU ISA Support for A-profile]
- Implemented the v8.3-RCPC, v8.4-RCPC and v8.3-CCIDX extensions,
and sent patches to the list
thanks
-- PMM
== Progress ==
* BFD Linker:
- GNU-629: non-contiguous memory support: posted updated v5
* GCC:
* GCC-9: continued work for validation of -mpure-code on v6m. Fix
committed to trunk and backported to gcc-9
* GCC upstream validation:
- reported a couple of failures/regressions
- working on reproducing a non-functional code problem with spec2006
on arm with LTO and -Os
* misc:
- infra fixes / troubleshooting / reviews
== Next ==
* Binutils: GNU-629: support non-contiguous memory regions in linker
* spec2006 / LTO / Os / aarch32
* FDPIC GDB
Four day week.
[VIRT-344 # ARMv8.5-MemTag, Memory Tagging Extension ]
Lots of work here.
Noticed that our TBI handling is wrong for system mode, such that the FAR_ELx
register gets the wrong contents. Noticed that SVE isn't handling TBI at all,
much less being prepared for MTE. Noticed that even AdvSIMD would not quite
produce the correct results for LD*/ST* (multiple structures).
Rearranging the actual MTE check from the ground up. Found an odd case with
DC_ZVA that threw a wrench into that planning.
[VIRT-327 # Richard's upstream QEMU work ]
Honor more HCR_EL2 trap bits.
HPPA patch queue flushed.
Patch review for ppc "hardfloat" patch.
Patch review for memory_region_allocate_system_memory.
r~
